The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1998
Filed:
May. 07, 1997
Minoru Kawabata, Sakai, JP;
Atsuhisa Kageyama, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A picture information detecting apparatus includes a picture area signal output circuit to detect a picture area excluding black band portions from the input video signal to produce a picture area signal to designate the picture area from which picture information is detected. Also included is a picture information detecting circuit for detecting picture information from the input video signal in the designated area. A picture quality compensating circuit is also provided for compensating the video input signal using the detected picture information to produce the gradation compensated video signal. An EDTV 2 discriminating circuit may also be included to determine if the video input signal is an EDTV 2 signal.